Study

Usage of new versus previously used nest boxes by rollers Coracias garrulus in the Serena region, Extremadura, Spain

  • Published source details Avilés J.M., Sanchez J.M. & Parejo D. (2000) The roller Coracias garrulus in Extremadura (southwestern Spain) does not show a preference for breeding in clean nestboxes. Bird Study, 47, 252-254

Actions

This study is summarised as evidence for the following.

Action Category

Provide artificial nesting sites for rollers

Action Link
Bird Conservation
  1. Provide artificial nesting sites for rollers

    A replicated, controlled study in pastureland in 1989-90 in Extramadura, Spain (Avilés et al. 2000), found that European rollers Coracias garrulus nesting in new nest boxes did not have higher reproductive success than those nesting in older nest boxes (average of 4.3 eggs/clutch, 69% breeding success and 4.0 fledglings/successful nest for 16 pairs in old boxes vs. 4.1 eggs/clutch, 83% and 3.6 fledglings/nest for 49 pairs in new boxes) and began laying significantly later (average laying date of 25th May for clutches in 16 old boxes vs. 30th May for 49 new boxes). Rollers did not appear to preferentially use either old or new boxes. Boxes were 32 x 18 x 19 cm with a 6 x 18 cm entrance hole and were installed on power line pylons at an average density of 9.5 boxes/km of power line.

     

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust